下降曲线

upward curve───上升曲线

downward spiral───向下旋转；螺旋式下跌；减记恶性循环

downward pressure───下向压力；向下压力

demand curve───[经]需求曲线

downward trend───[数]向下趋势，下跌趋势

downward movement───向下运动

downwardly mobile───adj.走下坡路的，每况愈下的

demand curves───[经]需求曲线

down and dirty───又脏又脏

As for Onions, I noticed on my last trip to India around Christmas that the demand curve was, indeed, downward sloping.───至于葱，在上次圣诞节前后我去印度时，发现需求曲线实际上是向下倾斜的。

First and foremost, neither bends the health-cost curve downward.───首先，没有任何一条医疗支出曲线有下降的趋势。

Fisher also drew on the curve, a production possibility frontier for society, which he made downward-curved.───费雪还画了一条曲线，一条社会的生产可能性边界，他让它向下弯曲。

BUT SEE THE DOC IF... your nails have all developed a strange downward curve like a parrot's beak.This is "clubbing" – it's rare but can be a sign of lung or gut problems.